Forgettable dramas

These are the dramas that I noticed I completely forgot about, to the point that I can barely remember the most basic of plot structure...and sometimes not even that much! 

I'm doubtful I'll rewatch these since I mostly don't even remember if I clearly enjoyed them or if my (sometime positive) ratings were more dependant on the fact that they were produced/acted well or had any feature which I found stood out compared to the usual, more than any real particular enjoyment I derived from them. 

The fact that they were so forgettable honestly isn't in their favour.